Homework Help: Physics

Posted by Emily on Sunday, September 16, 2012 at 2:27pm.

In deep space (no gravity), the bolt (arrow) of a crossbow accelerates at 187m/s^2 and attains a speed of 114m/s when it leaves the bow. For how long is it accelerated? Answer in units of m/s

What speed will the bolt have attained 2.8 sec after leaving the crossbow? Answer in units of m/s

How far will the bolt have traveled during the 2.8 sec. Answer in the units of m

Physics - Elena, Sunday, September 16, 2012 at 5:33pm
t=v/a =114/187 = 0.61 s.
deep space = > v=const => after 2.8 s v= 114m/s,
Distance = 114.0∙2.8 =319.2 m

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